When considering which is faster, a pedestrian or a car, we often overlook many aspects in our reasoning. For a car to be successful, thousands of kilometers of asphalt, sewers, filling and charging stations must be built and maintained, right across the (ecological) landscape and so on. We tend to focus on only one aspect, such as speed (cars are faster than walking or cycling), emissions (cars are polluting, particulate matter, CO2), energy, (material) costs, accident risk, convenience, etc. Rarely we can zoom out to see the whole picture, so think integrally. It is argued that to achieve a sustainable world, we should think more integrally (IDG2)!